The plastic deformation behavior of twinning-induced plasticity steels of composition Fe–25Mn–3Si–3Al were investigated by means of in situ synchrotron high-energy X-ray diffraction and compared to self-consistent simulations. It was the first time the alternating interaction of {111} <110> slip and {111}<112> twinning were directly observed in situ while undergoing uniaxial tension. The deformation texture was determined mainly by dislocation gliding, while deformation twinning impedes the reinforcement of texture.

Deformation Mechanisms of Twinning-Induced Plasticity Steels - in situ Synchrotron Characterization and Modeling. K.Yan, D.G.Carr, M.D.Callaghan, K.D.Liss, H.Li: Scripta Materialia, 2010, 62[5], 246-9